Pegging jack and bench



T. B. ELLIS. Pegging Jack and Bench NO. 237,434. 7 Patented Feb. 8,1881.

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PATENT FFICE.

THOMAS E. ELLIS, OF DAYTON,.WISCONSIN.

PEGGING JACK AND BENCH.

SPECIFICATION forming part of Letters Patent No. 237,434, dated February8, 1881.

Application filed January 16, 1880.

To all whom it may concern.-

Be it known that I, THOMAS E. ELLIS, of Dayton, in the county of Greenand State of Wisconsin, have invented certain Improvements in PeggingJacks and Benches, of which the followingis a specification.

My invention relates to acombination table and pegging-jack for the useof boot and shoe makers 5 and it consists in the construction andarrangement of parts hereinafter described in detail.

v Figure 1 represents a top-plan view of my apparatus Fig. 2, anelevation of the same, looking from the front backward; Fig. 3, avertical section on the line w :20, Fig. 1; Fig. 4, a section on theline y y, Fig. 1; Fig. 5, a perspective view of the shaft and lockingdevice by which the jack is sustained and fastened.

A represents a strong rectangular frame or table, having in each end asliding drawer, and an extensible cutting-board, I), located above thedrawer. Across the middle of the frame, from front to rear, I mount ahorizontal shaft, 13, seating the same in and between two metallicbearing-plates, O C, which are bolted, one upon the other, solidly tothe top of the frame, as shown in the various figures. This shaft isdesigned to sustain and adj ust the jack, and in order that the jack maybe held in different positions or inclinations I provide the shaft, asshown in Figs. 1, 2, and 5, with acentral-pinion, D, and mount in aspace in the bearing-plates G a sliding plate, E, which may be engagedwith or disengaged from the pinion by sliding it endwise. When the plateE is in one position it holds the pinion and shaft securely againstrotary motion, and when in the other position it leaves them free toturn readily. The locking-plate E is provided at one end with arms orhandles 0?, which pro trude through slots in the plates 0 at the frontside or the other of the handle and prevents the same from moving,except when a force is applied sufficient to depress the spring.

On the forward end of the shaft B, which projects in front of the frame,I secure a depending arm, F, the lower end of which isenlarged into acircular plate or foot having a large central recess and a smallercentral hole. 011 this arm F, I mount a horizontally-revolvingjack-base,G, the lower end of which has a broad bearing on the lower end of thearm, a neck fitting the recess in the same, and a central spindle, g,which is ex tended down through the central hole and provided with twosprings, h, and a nut, 'i, as shown in Figs 2, 3i, and 4. The twosprings are of arched or semi-elliptical form, and are arranged at rightangles to each other, and their ends are notched to embrace studs 1 onthe under side of arm F, whereby the springs are prevented from turning.By giving the jack-base G the large flat bearing on the arm F, andcombining therewith the round neck seated closely in thearm and thespindle and double springs, I am enabled to sustain the base firmly andrigidly under the severe strains, shocks, and blows to which it issubjected. The upper end of the jack-supportin g arm F is flattened andfashioned into an anvil upon which to hammer leather and perform likeoperations. The formation of the jack upon this arm is advantageous, inthat said arm may have its position changed, and in that, like thejack,'it receives the support of the spring K.

On its outer side the base G has arigid grooved standard containing anupright lever, H, the upper end of which is made of square form to enterthe round hole in the heel of the last. The lower end of the lever H isprovided with a set-screw, I, bearing against the standard, by which thelever may be moved and caused to tip the toe of the last down The leverH should be due strain on the partsand lessen the danger of the partsworking loose under the shocks IOO In practice it is found that whenlasts having round holes in them are used upon jacks having a roundshank to enter such holes, the round shank will in time wedge apart andsplit open the heel of the last. By making the shank of square form I amenabled, as practice has proven, to entirely overcome the danger ofsplitting the last. On the inner side of the base G, I hinge an uprighttoe-rest, J, to sustain the point of the last. In order to hold thisrest up in place beneath the last I connect to the rest, in any suitablemanner, a rod or stem, 70, the rear end of which is threaded andextended through a small standard on the base and into a nut on the rearside of said standard, as clearly represented in Fig. 4.

It will be noticed that there is an open unobstructed space between thestandard and the large standard in which the last-supporting lever ismounted. This permits the leg of a boot to extend down smoothly behindthe standard, and enables the operator to tighten up the toe-restwithout interfering with the boot-leg, and without requiring thelast-supports to be extended to an objectionable height.

The toe-rest has its upper end removable, as

usual, in order that end pieces maybe applied suitable for use inconnection with lasts of differentforms. Iprovide the end piece with theusual neck, and also with a shouldered bearing-surface, m, located abovethe neck and seated in a corresponding recess in the rest. Theshouldered bearing extends entirely across the rest and end piece fromside to side, and relieves the small neck of nearly all the strain.

In order to counterbalance the jack-supporting arm and base and admit oftheir belng revolved in a vertical plane with little labor, I secure tothe opposite end of the main supporting-shaft B a counter-weight, L,consisting of two upright diverging arms with weighted ends, asrepresented in Figs. 1, 2, and 3.

In order to prevent the springing of the arm F, and the consequentrebound under the blows ofthe hammer, I attach to the frame aspring-plate, K, having its ends slotted and secured by bolts, saidspring being arranged to bear firmly against the rear side of the armwhen the jack stands in an upright, or approximately upright, position.-The spring permits the arm F to swing readily around or with the shaftB, but as the arm returns to its normal position it rides upon andcompresses the spring. When the spring is used the operator is enabledto strike a dead blow upon the boot, and the danger of breaking thecastings is avoided.

In order the better to sustain the spring and shaft, I employ an uprightmetal leg, M, as shown in the drawings. 7 I am aware that in jacks ofthe same gen eral construction as mine the horizontal shaft has beenprovided with a friction-clamp which required to be tightened andloosened each time that the jack was moved. In practice it was foundthat the clamp required to be fastened very tightly, and that the laborof operating the same many times each day was very tiresome, It was alsofound that the concussion produced by the workmans hammer would causethe parts to work loose and change the position of the jack. By myconstruction these difficulties are avoided. My locking device may beactuated quickly and by a very slight exertion, and, owing to the factthat its parts interlock positively, the jack is held immovably inplace.

I am aware that a counter-balance has hitherto been employed to offsetthe weight of the jack, and I am also aware thata jack-supporting armhas been formed with an anvil upon which to pound leather. As abovestated, however, the fact that the arm in my device is sustained andsupported in a considerable degree by means of a spring renders the useof anvil thereon free from the danger of breakage of the arm,experienced where the arm is not so sustained.

Having described my invention, what I claim is 1. In combination withthe horizontal shaft having the jack mounted thereon, the locking deviceconsisting of the pinion and movable plate, as described and shown.

2. In combination with thejack-supporting shaft, the pinion and thelocking-slide, the spring, constructed and applied as shown, to hold theslide in position.

3. In combination with the swinging jacksuppor'ting arm F, the spring K,as and for the purpose described.

THOMAS E. ELLIS.

Vitnesses:

WILLIAM W. Donen, P. 'I. DODGE.

